The lncRNA13966.1 activates the expression of the WRKY4 transcription factor in black pepper (Piper nigrum L.)
Abstract
Piper nigrum L., commonly known as black pepper, is a commercially important spice crop. The regulatory activities driven by long non-coding RNAs in defense responses remain unexplored in black pepper. Overexpression of lncRNA13966.1 showed upregulation of WRKY4 transcript, suggesting its potential role in defense. Through bioinformatics analysis, we identified that the intergenic lncRNA13966.1 targets WRKY4 TF through the trans-mode, is localized in the nucleus, and possesses small ORFs. Through RT-qPCR assay, it was shown that Agrobacterium mediated transient overexpression of this lncRNA positively regulates WRKY4 TF.
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